SNMP Traps are not getting sent to the remote server.

I am trying to monitor Netbackup by sending SNMP traps to the remote snmp server.

I am running on Linux  RHEL 6.2 environment

Master Netbackup 7.5.0.3

Opscenter 7.5.

both snmp and snmptrapd are up running

ping between the snmp server and opscenter works fine.

I am able to see alerts in Opscenter GUI and to receive them via email but no snmp traps are sent to the remote snmp server.

Here is an excerpt of the trap log:

sendV2cTrap failed xx.xx.xx.93:162 1.3.6.1.4.1.1302.3.12.10.2.0.3 (1.3.6.1.4.1.1302.3.12.10.1.1,BEM SNMP) (1.3.6.1.4.1.1302.3.12.10.1.2,62 Clear Master Server hostname0x Unreachable) (1.3.6.1.4.1.1302.3.12.10.1.3,Alert Raised on: March 14, 2013 6:17 PM  Tree Type : Server   Tree Name : ALL MASTER SERVERS  Nodes : hostname0x  Alert Policy: Opscenter doesn't reach master server  OpsCenter Server: host_cnter  ) (1.3.6.1.4.1.1302.3.12.10.1.4,Opscenter doesn't reach master server) (1.3.6.1.4.1.1302.3.12.10.1.5,) (1.3.6.1.4.1.1302.3.12.10.1.6,) (1.3.6.1.4.1.1302.3.12.10.1.7,host_cnter) (1.3.6.1.4.1.1302.3.12.10.1.8,) (1.3.6.1.4.1.1302.3.12.10.1.9,) (1.3.6.1.4.1.1302.3.12.10.1.10,) (1.3.6.1.4.1.1302.3.12.10.1.11,Informational) (1.3.6.1.4.1.1302.3.12.10.1.12,Thu Mar 14 18:17:43 CET 2013)

What am I doing wrong ? Have I missed something ? 

Can someone help me, with troubleshoting.

Regards

Felicien